It looks like a low-poly model. Maybe good enough for your purposes, but I can print round things that don't have a bunch of flat faces around the circumference on my ancient printer. Granted, mine is surely much slower than the Bambu, but still, make that machine work for you.
Why you say that ? They are perfect. Tinkercad is very low resolution. These are very precise. The Bahtinov mask is exceptionally clean. The diffractions spike make perfect sharp stars.
